超声强化H_(2)O_(2)处理废水中的盐酸四环素  

Treatment of tetracycline hydrochloride in wastewater by ultrasonic enhanced H_(2)O_(2)

作　　者：袁晨曦 傅敏 陈正波 YUAN Chenxi;FU Min;CHEN Zhengbo(College of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,China;Chongqing Key Laboratory of Catalysis and New Environmental Materials,Chongqing 400067,China)

机构地区：[1]重庆工商大学环境与资源学院,重庆400067 [2]催化与环境新材料重庆市重点实验室,重庆400067

出　　处：《环境工程学报》2021年第4期1219-1226,共8页Chinese Journal of Environmental Engineering

基　　金：重庆市教委科学技术研究计划重大项目(KJZD-M201800801);催化与环境新材料重庆市重点实验室项目(KFJJ2018051)。

摘　　要：采用超声波强化H_(2)O_(2)处理盐酸四环素(tetracycline,TC)模拟废水,研究了不同处理方式、H_(2)O_(2)投加量、超声功率、TC初始浓度和pH对TC去除率的影响。结果表明,超声协同H_(2)O_(2)技术能有效处理含TC的废水,且其降解符合拟一级反应动力学模型。当TC溶液浓度为10 mg·L^(-1)、H_(2)O_(2)的投加量为50 mmol·L^(-1)、超声功率为120 W、初始pH为11时,TC的去除率可达到90.4%。电子顺磁共振(EPR)的实验结果表明,在超声/H_(2)O_(2)体系中的主要活性自由基是·OH,通过液相-质谱联用仪(LC-MS)检测出10种中间产物,并由此推测了TC可能的降解路径。Ultrasonic enhanced H_(2)O_(2)was used to treat tetracycline hydrochloride(TC)simulated wastewater.The effects of different treatment methods,H_(2)O_(2)dosage,ultrasonic power,initial concentration of TC and pH on the TC removal rate were studied.The results showed that ultrasonic combined H_(2)O_(2)technology could effectively treat TC wastewater,and its degradation conformed to the pseudo-first-order reaction kinetic model.When the concentration of wastewater solution was 10 mg·L^(-1),the dosage of H_(2)O_(2)was 50 mmol·L^(-1),the ultrasonic power was 120 W,and the initial pH was 11,the TC removal rate could reach 90.4%.Electronic paramagnetic resonance(EPR)experimental results confirmed that the main active free radical in ultrasonic/H_(2)O_(2)system was·OH.Ten intermediate products were detected by liquid chromatography-mass spectrometry(LCMS),and their possible degradation pathways were inferred.

关 键 词：四环素 超声波 H_(2)O_(2) LC-MS EPR 

分 类 号：X703[环境科学与工程—环境工程]